Car-attached derailer



Oct. 7, 1930. 'J, T, DOBBE ET AL 1,777,788

CAR ATTACHED DERAILER Fild Oct. 1, 1929 t I 77 fi ,4 5/! ,y I .Z.

" Inventors I a I Jail Z I j Joseph Todd I [7 I By I I Attorney Patented Oct, 7,-1930 UNITED AT PATENTOFFICE JOHN T. DOBBIE AND JOSEPH TODD, or LONAGONING, MARYLAND GAR-ATTACHED DERAILER' applicationfiled october 1929; Serial No. semen.

i This inventionrelates to derailersparticii larly adapted to attachment tomine camp An object of the.invention-isto provide a derailerthat is positive in operation, that will not cause undue wear upon the railroad ties or roadbe dsrthat'is strong, compact and du rable, thoroughly reliable for its intended purpose, very simple in its methodof assembly, andcomparativelyinexpensive to manu- 210 facture and install.

"Another object 'ofthe invention is to pro vide a derailer that when tripped will cause the end car of a string of cars to be thrown oif thetrack thereby preventing serious ac- 11 cidents in mineshaving considerable grades in the track.

lVith the foregoing and other objects in view, the invention consists of a novel conl struction, combination and arrangementbf parts as will be hereinafter more specifically described and illustrated inthe accompanying drawings whereinis disclosed an embodiment of the invention, but it isto be understood thatv changes, variations and modifications maybe resorted to without departing fromthe spirit of the claimshereto appended: {Ill the drawings, wherein like reference characters denote corresponding parts throughout the several views: 7

Figure 1 is a fragmentary side elevation of thereof.

asection ofrailroadtrack with a car supported thereon showing an applicationof the presentinvention therewith. f a i a j Figure 2 is'a fragmentary topplan view *Figure 3 is a longitudinal section in detail a of the device in accordancewithjthe" present invention, detached fromtheca'r,

tripping lever connection. Figure 5 is anenlargedfragmentarytop plan View of the tripping lever connection.

Referring tethe -drawings in detail, 6 in h dicates a railroad track whic'h in orders to properly illustrate the invention is on anincline and disclosed in Figure 1. It is customary in mines to have the railroad tracks disposed at varying grades; The numeral 7 indicates a mine car body which when con- 5 sidered with an application ofthe present Figure at is a sectional-viewin detail ofthe' invention,is to be understood as the endear 1 of a string of cars. The .carbody 7 is sup-v ported on pairs ofwheels 8,9 that ride on the track 6.

Disposed at intervals adjacent the track areavedge-sliaped abutments 10, the inclined faces of which slope with" the grade ofthe track while the perpendicular faces thereof are disposed at right angles to the grade.

g The supporting arm isl indicated generally 1 at 11 and-in event the cars 7 are formed with the conventional drawbar' 12; the supporting arm 11 has a yoke-shaped head 13." Through the legs ofthe head 13 areregistering openings 14:, 15 by which the head isljattached to the draw bar by suitablehold fast means 16. It is to be understood that the head 13 may be modified to fit either thedraw bar 120r may be attached to the end sill of the car.

oted on a pin 19 between the legs 20, 21. The

railing arrn indicated'generaly at'18is piv derailing arm 18 is forked on its outer-free it end into branches 22 23, the-outer ends of which are pointed. The arm 18 curves dowriwardly from itsinner to its outer end; 'lhe lower edge of the arm 18 adjacent theinner end thereof is providedwith an .arcuate notch 24.; in which is normallyhseated the upper end ofanelliptical shaped cam 25 which is rotatable in the furcation inthe bifurcation 17. e V g 1 The cam '25 iseccentrica11 secured 17 shaft 26 which is journalledto the legs 20,'-21

and projects laterallytherefrom. The end of theshaft 26 terminates in verticalialine 'mentg' but abovethe abutments 1O. Athub 27 lSfOtiltELblY mounted onthe end of the shaft 26 and is provided witha radially disposed recess 28 that is less than afquadrant ofr the V hub. Anchored in the shaft 26 and project ing within the recess 28 is a pin 29 that limits the movement of the shaft with respectto the A tripping arm 30 is threadably secured as at 31, at its upper end to the hub 27. The arm 30 in operating position depends from the hub 27 in alinement with the abutments 10 and is of such length as to contact therewith.

In the application of the invention, the tripping lever 30 depends in the position shown in Figure 4: of the drawings. As the string of cars pass up the incline, the trip ping arm 30 ri'desup the inclined face of the abutment 10 in the direction of the arrow shown in Figure 4c. The hub 27 being free to move on the shaft 26 for less than a quadrant of a circle, moves with the arm and turns in the opposite direction when the arm drops from the upper edge of the abutment.

The abutments are spaced at intervals along the tracks, and in event the string of cars would for any reason become detached from the motive vehicle, the tripping arm 30 will come in contact with the perpendicular face of the first abutment in line which causes it to move in the opposite direction from the arrow in Figure 4 and this action causes shaft 26 to turn. WVhen shaft 26 turns cam 24 permits the arm 18 to drop whereby the ends thereof engage the ground. As the car moves downwardly further, the car is fulcrumed upon the arm 18 and thrown off the track.

The arm 30 so balances the shaft 26 that the upper end of thecam 25 under normal conditions will re-seat itself in the notch 24 of the arm18.

It is to be understood that by describing in detail herein any particular form, structure or arrangement, it is not intended to limit the invention beyond the terms of the several claims, or the requirements of the prior art.

Having thus described mywinvention, what I claim is:

1. In combination, a railroad track, a vehicle movably mounted on the track, abutments adjacent the rails of the track, a supporting arm having one end bifurcated, a derailing arm. pivoted to one end between the legs of said bifurcated ends, and having a notch on one edge thereof,,a shaft journalled in the legs of the bifurcated end of the supporting arm and projecting laterally therefrom, a cam on the shaft detaehably seated in said notch, a tri ping arm rotatably mounted on the shaft and adapted'to engage the abutments on the: railroad track, means on the shaft and associated with the tripping arm for restricting the rotation of the tripping arm so as to turn the shaft and cause the derailing arm to engage the ground for the purpose of derailing the car to which the device is attached. r

2; A derailer comprising a supporting arm having one end bifurcated,- a derailing armpivoted at oneend between the legs of saidbifurcated ends and having a notch on the device is attached.

3. A derailer comprising a supporting arm having one end bifurcated, a derailing arm pivoted at one end between the legs of said bifurcated ends and having a notch on one edge thereof, a shaft journalled in the legs of the bifurcated end of the supporting arm and projecting laterally therefrom, a cam on the shaft detachably seated in said notch, a hub rotatably mounted on the free end of the shaft, a tripping arm rigidly coupled to the hub and depending therefrom, means on the shaft and associated with the hub for restricting'the rotation of the tripping arm so as to turn the shaft and cause the derailing arm to engage the ground for the purpose of derailingthe car to which the device is attached, said means consisting of a radially disposed recess and a pin anchored to said shaft and ridable in said reoess.

4. A derailer comprising a supporting arm having one end bifurcated, a derailing arm' pivoted at one end between the legs of said bifurcated ends and having a notch on one edge thereof, a shaft journalled in the legs of the bifurcated end of the supporting arm and projecting laterally therefrom, a cam on the shaft detachably seated in said notch, a hub rotatably mounted on the free end of the shaft, a tripping arm rigidly coupled to the hub and depending therefrom, means on the shaft and associated with the hub for restricting the rotation of the tripping arm so as to turn the shaft and cause the derailing arm to engage'the ground for the purpose of derailing the car to which the device is attached, said means consisting of a radially disposed recess and a pin anchored to said shaft and rideable in said recess, said recess being less than a quadrant.

In testimony whereof we afiiX our signatures.

' JOHN T. DOBBIE.

JOSEPH TODD; 

